In Freundlich adsorption,the amount of gas adsorbed is proportional to pressure $P$ as

Which of the following gases is adsorbed to a greater extent if the adsorbent remains the same under similar conditions of temperature and pressure?

Explain the types of adsorption.

Given below are two statements. One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A :$ Activated charcoal adsorbs $SO_{2}$ more efficiently than $CH_{4}$.
Reason $R$ : Gases with lower critical temperatures are readily adsorbed by activated charcoal.
In the light of the above statements,choose the correct answer from the options given below.

Which substance is used as an adsorbent in chromatography?

In the Freundlich adsorption isotherm,the slope of the $AB$ line is: